Firing socket or cup for grenades



E. MATTLET FIRING SOCKET OR CUP FOR GRENADES' Filed July 192 '3 Sheets-Sheet 2 In Van 2 77 March 22, 1927. ,6 2,160

E. MATTLET FIRING SOCKET (JR-CUP FOR GRENADES Patented Mar. 22, 1927.

UNITED- ERNEST MATTLET, 0F BRUSSELS, BELGIUM, as'sreivon'ro FABRIQUE NATIONALE DARMES DE GUERRE, SOCIETE ANONYME, OFI-IERSTAL-LEZ -LIEGE, BELGIUM.

FIRING SOCKET on our Eon GRENADEs.

Application filed July 30, 1926, Serial No. 126,021, and in Belgium August 8, 1925.

The present invention relates to firing sockets or cups which are eccentrically mounted ongun or rifle barrelsI so as to permit grenades to be fired by the action of the gases produced when the bullet is fired from the gun, the said gases being by-passed into the socket in such a way as to project the grenade out of the latter. The invention more particularly relates to a device for enabling the socket to be rapidly isolated and even removed, the gun being adapted in this case to continue to be employed with all its normal ballistic properties. a

For this purpose the body of the socket is provided at its back part with a pin disposed axially and penetrating, when the body of the socket is placed in position upon the gun or rifle, into a corresponding lodgment in a: supporting member attached to the rifle and communicating with the barrel of the latter-through a suitable duct; the said pin is provided with a transverse groove or throat into which enters subsequently a cylindrical member also passing through the said supporting member.

In order to enable the above mentioned pin and consequently the body of the socket to be withdrawn without necessitating the removal of the above mentioned cylindrical locking member, the latter is provided upon its periphery with a throat or groove which can be brought into coincidence with the pin by simplyrotating the said cylindrical mem- The said cylindrical member is further provided with a channel which puts the ductpierced in the wall of the barrel into communication with the duct pierced in the pin of the socket; this channel is directed in such a way that-the above mentioned com,- munication is broken and consequentlythe rifle barrel isolated, when the pin of the socket body can be withdrawn from its lodgment.

The invention is illustrated by way of example in the accompanying drawings, in f ace.

which v Figure 1 is a longitudinal section through a-gun the barrel of which alone is shown in part and is provided with the socket or cup only the rear part of the barrel 1 is shown with which the body of the socket 2 is in communication. -Thesaidbody 2, within which will be placed the grenade, is provided at its back part with a pin 3 disposed axially and provided with shoulders 4, which when the said pin is introduced into the corresponding lodgment' 5 of-the'supporting member 6, slipped over the rear part of the barrel 1, abut against corresponding shoulders 4: on the'latter. r y In order to retain the said pin 3 in its lodgment 5 it is provided with a transverse groove 7 into which penetrates a cylindrical member S which also passes through the supporting member 6; this cylindrical mem-- ber thus opposes the disengagement of the pin 8 and consequently the removal of the socket 1 body.

In order to permit this removal however,-

the said cylindrical member is provided upon its periphery with a throat or groove 9 which, bythe rotation of the cylindrical member may be brought into coincidence with the pin 3, as shown in Figure 3, in such a way as to enable the socket body to be.

withdrawn.

The above mentioned pivotal movement of the cylindrical member 8 may be eflfected from the outside by acting by any suitable means upon its extreme face situated at the side of the shoulder 17; it may,-for instance, be obtained by means of a screw driver inserted in a suitable slot formed in the said The above described method of attachment of the socket body is also combined, according to the invention, with a device such that, when the cylindrical member 8 is turned so as to permit the removal of the socket body (see Fig. 3), the by-pass of the barrel leading the gases under pressure from the barrel to the socket is at the sametime closed in such a way that the gun is thus adapted to continue to be employed with all its normal ballistic properties.

To this end, the cylindrical member 8 is provided with a channel 10 which puts into communication (see Fig.1) theiducts '11 and 11 pierced in the barreland in the member 6 with the ducts 12 pierced in the pin Sand opening into the end of the body2 of the socket. 1

The channel 10 is directed in such a way that when the cylindrical" member 8 is turned, as described above, (see Fig. so as to permit the pin 3 to be'withdraWn, the said channel is no longer in communication with the ducts 11, 11' and 12.

As more particularly shown in Figures 2 and 4, the amplitude of the pivotal' movement of the cylindrical member is controlled by means of a screw 14 the end of which enters into a suitable slot 13 in the said memher which will on the other hand be retained in its two end positions by the action of a spring stop 14 the end of which is adapted to penetrate into suitable notches 16 and 16 corresponding respectively to the open and closed position of the by-pass of the gases towards the socket.

The cylindrical member has formed at one of its ends a shoulder 17 and is provided at its other end with "a" plate 18 which is attached to it by a screw 19.

As shown more particularly in Figure 5 the duct 11 communicates With the interior of the barrel by two slots 11 parallel to the axis of the barrel and opening into the duct 11 of circular section; the ducts 11, 10 and 12 are further of suitably increasing section so as to produce a slight expansion of the gases.

According to the 'form of construction shown in the drawings, the slots 11 are situated at the rear part of the barrel; their po-' sition will be judiciously chosen in such a Way that the pressure of the gases gives the maximum efficiency from the point of view of launching the grenade.

lVhat I claim is: i p

1. A firing socket or cup for grenades adapted to be mounted eccentrically upon a gun or rifle and comprising axially at its back part a pin, a supporting member attached to the gun barrel and comprising a lodgment for receiving said pin, a transverse groove or throat provided in said pin, a cylindrical member which passes through said groove and through the supporting member and means for conducting the gases from the gun barrel into the body of the socket.

2. A firing socket or cup for grenades adapted to be mounted eccentrically upon a gun or rifle and comprising axially at its back part a pin, a supporting member attached to the gun barrel and comprising a lodgment for receiving said pin, a transverse grooveor throatprovided in said pin, a cylindrical member which passes through said groove and through the supporting member, a duct traversing the said cylindrical member and putting in communication a Iduct pierced in the axial pin of the socket ody..

'3, A firing socket or cup for grenades adapted tobe mounted eccentrically upon a gun or rifle and comprising axially at its back part a pin, a supporting member attached to the gun barrel and comprising a lodgment for receiving said pin, a trans versegroove or throat provided in said pin, a cylindrical member which passes through said groove and through the supporting m'ember, the cylindrical member being provided upon its periphery with a groove or throat which by the rotation of the said cylindrical member is adapted to be brought into coincidence with the said pin so as to permit the removal of the latter from its lodgment and means for conducting the gases from the gun barrel into the body of the socket.

4. A firing socket or cup for grenades adapted to be mounted eccentrically upon a gun or rifle and comprising axially at its back part a pin, a supporting member attached to the gun barrel and comprising a lodgment for receiving said pin, a transverse groove or throat provided in said pin, a cylindrical member which passes through said groove and through the supporting member, the cylindrical member being provided. upon its periphery with a groove or throat which by the rotation of the said cylin'drical member is adapted to be brought into coincidence with the said pin so as to permit the removal of the latter from its lodgment and a duct traversing the said cylindrical member and putting in communication a duct pierced in the supporting memher and in the gun barrel with a channel pierced in the axial pin ofthe socket body. the groove and the duct of the said cylindrical memberbeing relatively directed in such a Way th'at the said duct is completely isolated when the groove of the cylindrical member is brought I into coincidence with the pin of the socket body.'

5. A firing socket or cup for grenades adaptedto be mounted eccentrically upon a gun or rifle and comprising axially at its back part a pin, a supporting member attached to the gun barrel and comprising a lodgment for receiving said pin, a transverse groove or throat provided in said pin, a cymember and in the gun barrel with a channel lindrical member Which passes through said pierced in the gun or rifle barrel being progroove and through the supporting mem vided in the form of slots the longer axis of 10 her, a duct traversing the said cylindrical which is parallel to the axis of the barrel. member and putting into communication a In testimony whereof I affix my signature. duct pierced in the axial pin of the socket body, the ducts pierced in the supporting ERNEST MATTLET. 

